How to Play Roulette — Bets, House Edge, Why Systems Fail
Roulette is a 1796 French game named after the wheel: ‘la roulette’ = ‘the little wheel.’ The American version added a second 0 (00) in the 1800s, increasing the house edge from 2.7% to 5.26%. Here’s how to play strategically — bets that minimize the house edge, and the math behind why no system can beat roulette long-term.
European vs American Roulette
European Roulette has 37 pockets: 0, and 1-36. House edge: 2.7% (one zero out of 37 = 2.7%).
American Roulette has 38 pockets: 0, 00, and 1-36. House edge: 5.26%. The double-zero almost doubles the house edge.
If you have a choice, always play European. Most browser roulette (including ours) is European-style.
Bet types and their odds
Straight (single number): 1:35 payout. True odds: 1:36. House edge: 2.7%. Highest variance bet.
Split (2 adjacent numbers): 1:17 payout. House edge: 2.7%.
Street (3 numbers in a row): 1:11. House edge: 2.7%.
Corner (4 numbers): 1:8. House edge: 2.7%.
Six Line (6 numbers): 1:5. House edge: 2.7%.
Column or Dozen (12 numbers): 1:2. House edge: 2.7%.
Even-money bets (Red/Black, Even/Odd, High/Low): 1:1 payout. True odds: 18:18 NOT 50:50 because of the 0. House edge: 2.7%.
Every bet has the same house edge
That’s the trick of Roulette: every bet type has identical house edge (2.7% in European). Some bets pay more for less frequency; others pay less for more frequency. The expected loss per dollar bet is the same.
So strategy is NOT about choosing bet types to win. Strategy is about choosing bet types to match your variance tolerance.
Why no betting system works long-term
Martingale: double after every loss. Sounds great until you hit table limits or run out of bankroll. Over enough spins, you will lose more from the catastrophic streaks than you’ll win from the small recoveries.
Same math applies to D’Alembert, Fibonacci, Labouchère, every other system. All have negative expected value because the house edge is structural, not tactical.
Variance management
If you want to play roulette for entertainment, the strategy is variance management. Even-money bets (Red/Black) give you the most spins per bankroll. Single-number bets give you the most exciting wins but bust your bankroll fastest.
Rule of thumb: bankroll = 50× your average bet. So if betting $5 per spin, bring $250 to the table. You’ll likely play 100+ spins; some will lose, some will win; you’ll end the night about 2-3% in the hole.
Practice
Play our Roulette. European wheel. Bet types: straight, split, street, corner, line, column, dozen, even-money. No real money; learn the table layout for free.
